The letters of the word ABACUS have been arranged in the shape of a
triangle. How many different ways can you find to read the word
ABACUS from this triangular pattern?
Label the joints and legs of these graph theory caterpillars so that the vertex sums are all equal.
Label this plum tree graph to make it totally magic!
This problem is in two parts. The
first part provides some building blocks which will help you to
solve the final challenge. These can be attempted in any order. Of
course, you are welcome to go straight to the Final Challenge!